拉姆达表达式记录 + log日志+代码

素颜马尾好姑娘i 2024-04-06 12:23 93阅读 0赞

#### 目录 ####

*   *   *  71. item.label = $"\{lstD\[i\].DeptName\}(\{lstCamera.Count\})";
         *  72. 定义entity时不写传统的\{get；set；\}
         *  73.
         *  74. EF多对多
         *  75. DateTime.Now.Subtract(x.GpsTime).TotalHours
         *  76. queryModel.LogDate.Value.Year
         *  77. .net导出Excel
         *  78. User.Identity.Name
         *  79.
         *  80. EF忽略查询（待解决）
         *  81. A\_Model 映射到 B\_Model
         *  82.
         *  83. list.Any()
         *  82. dateTime.Psrse();
         *  83.
         *  83. model.LiangLength ?? 0
         *  84. id = Guid.NewGuid()
         *  85. DateTime.Subtract(DateTime t)
         *  86. list.take(100)
         *  87. DateTime.Value.Year
         *  88. var 堆和栈
         *  89. GroupBy 的用法
         *  90. 将string字符串按，拆分并转成网络路径后存入list集合。
         *  91. string.Join("-", z.Files)
         *  92. ToModel() 方法
         *  93. entity
         *  94. LogHelper.LogInfo输出日志
         *  95. lst.Select(Lambda)
         *  96.
         *  97. whereLambda表达式初始值，类似于SQL语句的“where 1=1”
         *  98. string.IsNullOrEmpty()
         *  99. lst.ForEach(Lambda)
         *  100. dao.Table.Any(Lambda)

#### 71. item.label = $“\{lstD\[i\].DeptName\}(\{lstCamera.Count\})”; ####

item.label = $"{
          lstD[i].DeptName}({
          lstCamera.Count})";

> 输出结果如下：  
> “label”: “潜江市交通运输局(70)”,

#### 72. 定义entity时不写传统的\{get；set；\} ####

public class IPCJobSModel
    {
        
     	 public int Id {
         get; set; }
         /// <summary>
         /// 实际结束时间
         /// </summary>
         public DateTime? ActualEndTime {
         get; set; }
     	 public string IsOverdue
            {
        
                get
                {
        
                    var TempIsOverdue = "NO";
                    DateTime TempActualEndTime = ActualEndTime == null ? DateTime.Now : ActualEndTime.Value;
                    if (TempActualEndTime> HandleEndTime)
                    {
        
                        TempIsOverdue = "YES";
                    }
                    return TempIsOverdue;
                }
            }
    }

#### 73. ####

![在这里插入图片描述][713859fbe33d4598967d5db8bc4b6143.png]

#### 74. EF多对多 ####

潜江-角色用户关联表

#### 75. DateTime.Now.Subtract(x.GpsTime).TotalHours ####

List<PersonGps> lstOnPersonGps = lstPersonGps.Where(x => DateTime.Now.Subtract(x.GpsTime).TotalHours <= 0.5).ToList();

#### 76. queryModel.LogDate.Value.Year ####

#### 77. .net导出Excel ####

[https://blog.csdn.net/zz743830597/article/details/104637050][https_blog.csdn.net_zz743830597_article_details_104637050]

#### 78. User.Identity.Name ####

获取当前登录人的name

SysUserService userService = new SysUserService();
    string userName = User.Identity.Name;
    UserEntity userinfo = userService.GetUserByName(userName);

#### 79. ####

IQueryable requredDataFields = data.Select(x => new {
          x.Title,  x.NestedObject });

#### 80. EF忽略查询（待解决） ####

利用EF查询数据库时，忽略查询某字段，提高查询效率；

#### 81. A\_Model 映射到 B\_Model ####

/// <summary>
        /// 扩展工具类
        /// </summary>
        public static class Utils
        {
        
            // 运行时映射
            public static void ReflectCase<Oringin, Target>(Oringin origin, Target target)
            {
        
                Type type = origin.GetType();
                Type type2 = target.GetType();
                PropertyInfo[] properties = type.GetProperties();
                for (int i = 0; i < properties.Length; i++)
                {
        
                    PropertyInfo propertyInfo = properties[i];
                    bool flag = propertyInfo.Name == "Id";
                    if (!flag)
                    {
        
                        PropertyInfo[] properties2 = type2.GetProperties();
                        for (int j = 0; j < properties2.Length; j++)
                        {
        
                            PropertyInfo propertyInfo2 = properties2[j];
                            bool flag2 = propertyInfo.Name == propertyInfo2.Name && propertyInfo.GetValue(origin) != null;
                            if (flag2)
                            {
        
                                propertyInfo2.SetValue(target, propertyInfo.GetValue(origin));
                            }
                        }
                    }
                }
            }

#### 82. ####

//public string DeleteTimeString
            //{
        
            //    get { return DeleteTime == null ? "" : DeleteTime.Value.ToString("yyyy-MM-dd HH:mm:ss"); }
            //    set { DeleteTime = string.IsNullOrEmpty(value) ? DateTime.Now : DateTime.Parse(value); }
            //}

#### 83. list.Any() ####

确定序列是否包含任何元素。

// 摘要:
            //     确定序列是否包含任何元素。
            //
            // 参数:
            //   source:
            //     要检查是否为空的 System.Collections.Generic.IEnumerable`1。
            //
            // 类型参数:
            //   TSource:
            //     source 中的元素的类型。
            //
            // 返回结果:
            //     如果源序列包含任何元素，则为 true；否则为 false。
            //
            // 异常:
            //   T:System.ArgumentNullException:
            //     source 为 null。
            public static bool Any<TSource>(this IEnumerable<TSource> source);

#### 82. dateTime.Psrse(); ####

// 摘要:
            //     将日期和时间的字符串表示形式转换为其等效的 System.DateTime。
            //
            // 参数:
            //   s:
            //     包含要转换的日期和时间的字符串。
            //
            // 返回结果:
            //     一个对象，它等效于 s 中包含的日期和时间。
            //
            // 异常:
            //   T:System.ArgumentNullException:
            //     s 为 null。
            //
            //   T:System.FormatException:
            //     s 中不包含有效的日期和时间的字符串表示形式。
            public static DateTime Parse(string s);

#### 83. ####

public List<ChildrenModel> children {
         get; set; } = new List<ChildrenModel>();

#### 83. model.LiangLength ?? 0 ####

Dictionary<string, decimal> diclist = new Dictionary<string, decimal>();
    diclist.Add("良", model.LiangLength ?? 0);

#### 84. id = Guid.NewGuid() ####

id = Guid.NewGuid()

#### 85. DateTime.Subtract(DateTime t) ####

从此实例中减去指定的日期和时间;

DateTime.Now.Subtract(x.GpsTime).TotalHours <= 0.5

#### 86. list.take(100) ####

取lstOverload集合中的前100条进行遍历操作；[更多][Link 1]和[skip][]

foreach (OverloadCtrlEntity en in lstOverload.OrderByDescending(x => x.ArriveDate).Take(100))
    {
        
    	OverLoadModel model = new OverLoadModel();
    	model.OverloadRate = en.OverloadRate;
    	lst.Add(model);
    }

#### 87. DateTime.Value.Year ####

–>学会转换思维，当A.Year 行不通的时候(A 为 DateTime? 类型)，可以试试 B.Year。

if (query.Year.HasValue)
    {
        
       item = item.Where(x => x.RecordTime.Value.Year == query.Year);
    }
    
       item = item.Where(x => x.RecordTime.Value.Month == query.Month);
       item = item.Where(x => x.RecordTime.Value.Day == query.Day);

#### 88. var 堆和栈 ####

参考：[https://www.cnblogs.com/archor/archive/2011/10/26/3199375.html][https_www.cnblogs.com_archor_archive_2011_10_26_3199375.html]

#### 89. GroupBy 的用法 ####

List<string> userName = data.GroupBy(x => x.RecorderName).Select(x => x.Key).ToList();

#### 90. 将string字符串按，拆分并转成网络路径后存入list集合。 ####

string.Split(',').Select(k => Common.FilePathTrans(k, strDirName, strPublishAddr)).ToList());

#### 91. string.Join(“-”, z.Files) ####

string.Join(",", z.Files) //用，将z.Files中的每个string字符串拼接形成一个字符串

#### 92. ToModel() 方法 ####

public static ShipPortRiskInfoModel ToModel(this ShipPortRiskInfoEntity entity)
            {
        
                var m= entity.MapTo<ShipPortRiskInfoEntity, ShipPortRiskInfoModel>();
                if (entity.IPCJobId.HasValue)
                    m.IsJob = true;
                else
                    m.IsJob = false;
                return m;
            }

public static CaseInfoModel ToModel(this CaseInfoEntity entity)
            {
        
                var m = entity.MapTo<CaseInfoEntity, CaseInfoModel>();
                var result= m.ExcuteUserIds.Split(',').ToList();
                SysUserService userService = new SysUserService();
                var names = new List<string>();
                result.ForEach(x =>
                {
        
                    var user = userService.GetEntity(x.ToInt().Value);
                    if(user != null)
                        x = user.RealName;
                    names.Add(x);
                });
                m.ExcuteUserName = string.Join(",", names) ;
                if (entity.IPCJobId.HasValue)
                    m.IsJob = true;
                else
                    m.IsJob = false;
                return m;
            }

#### 93. entity ####

public class IndexEvaConfigEntity
        {
        
            public IndexEvaConfigEntity()
            {
        
                AssessName = string.Empty;
                Grade = string.Empty;
            }
            public int Id {
         get; set; }
            public string AssessName {
         get; set; }
            public string Grade {
         get; set; }
            [DecimalPrecision(12, 3)]
            public decimal MinValue {
         get; set; }
            [DecimalPrecision(12, 3)]
            public decimal MaxValue {
         get; set; }
            public string Color {
         get; set; }
            public int? Width {
         get; set; }
        }

#### 94. LogHelper.LogInfo输出日志 ####

string funcName = MethodBase.GetCurrentMethod().Name;
    	LogHelper.LogInfo(JsonConvert.SerializeObject(grid), funcName);
     	LogHelper.LogInfo(JsonConvert.SerializeObject(model), funcName);
     	LogHelper.Debug(funcName + JsonConvert.SerializeObject(req));

#### 95. lst.Select(Lambda) ####

var query = routeReposity.Table.Select(x => new {
        
                    DeleteState = x.DeleteState,
                    RouteCode = x.RouteCode,
                    RouteCharacter = x.RouteCharacter,
                    Id = x.Id,
                    RouteName = x.RouteName,
                    TechLevel = x.TechLevel,
                    RouteLength = x.RouteLength,
                    SourceData = x.SourceData
                });

#### 96. ####

protected override IEnumerable<FileSystemConfigurationEntry> ProcessEntries(ICollection<FileSystemConfigurationEntry> entries)
            {
        
                entries.ForEach(
                    e =>
                        {
        
                            Logger.Debug("Processing publisher configuration entry: {0}...", e.FileInfo.Name);
    
                            var configType = Type.GetType(e.Entry.ConfigurationType);
                            var config = Serialiser.FromJson(e.Entry.Data, configType);
    
                            if (IsDisabled(config))
                                return;
    
                            var name = Path.GetFileNameWithoutExtension(e.FileInfo.Name);
                            Container.RegisterInstance(configType, config, name);
                            FindAndExecuteBootstrappers(configType, config);
                            e.Entry.RequiredProperties.AddIfMissing(Tuple.Create(ConfigurationEntry.RequiredPropertyNames.NAME, name));
    
                            if (string.IsNullOrWhiteSpace(e.Entry.PluginType))
                                return;
    
                            var pluginType = Type.GetType(e.Entry.PluginType);
                            var pluginName = string.Format("{0}.{1}", pluginType.AssemblyQualifiedName, name);
                            Container.RegisterAsSingletonWithInterception<INotificationEventPublisher, IPublisherFilter>(
                                pluginType,
                                pluginName,
                                new Tuple<Type, string>(configType, name));
                        });
    
                return entries;
            }

#### 97. whereLambda表达式初始值，类似于SQL语句的“where 1=1” ####

Expression<Func<UserEntity, bool>> whereLambda = x => x.Id > 0; //whereLambda表达式初始值，类似于SQL语句的“where 1=1”

#### 98. string.IsNullOrEmpty() ####

if (!string.IsNullOrEmpty(queryModel.BtnName))
                {
        
                    query = query.Where(x => x.BtnName.Contains(queryModel.BtnName));
                }

#### 99. lst.ForEach(Lambda) ####

model.ForEach(x =>
                {
        
                    sql = string.Format(@" -- 桥梁汇总
                                           select  0, convert(varchar(64), NEWID()) IsUnique , '桥梁'  Label, count(1) Number ,'qiaoliangguanli' ParentIcon,'#F89017' IconColor  from BMS_D_Bridge left join BMS_S_AssetType B on B.TypeName='桥梁'  {0}
                                           union 
                                           -- 隧道汇总
                                           select 1, convert(varchar(64), NEWID()) IsUnique, '隧道' Label, count(1) Number ,'suidaoguanli' ParentIcon,'#00A854'IconColor  from BMS_D_Tunnel left join BMS_S_AssetType B on B.TypeName='隧道'  {0}
                                           union
                                           -- 涵洞汇总  --暂时无此表
                                           select 2,convert(varchar(64), NEWID()) IsUnique, '涵洞' Label, count(1) Number ,'handongguanli' ParentIcon, '##00A854'IconColor from BMS_D_Tunnel
                                           union
                                           -- 大类汇总
                                           select 3,convert(varchar(64), NEWID()) IsUnique, A.TypeName Label, null as Number,A.Icon ParentIcon,IconColor  from  BMS_S_AssetMainType A where A.TypeName not like '%桥%' and A.TypeName not like '%隧%' and A.TypeName not like '%涵%' and SortCode>0", Important == 0 ? "" : "where B.IsCommonType=1");
                    if (sql != string.Empty)
                    {
        
                        x.children = dao.FindList<AssetChildrenModel>(sql);
                    }
                    // x.children = x.children.Where(xx => xx.Number != null &&  xx.Number > 0).ToList();
                    sql = string.Empty;
                    x.children.ForEach(y =>
                    {
        
                        switch (y.Label)
                        {
        
                            case "桥梁":
    
                                sql = string.Format(@" select 'qiaoliangguanli' ParentIcon,'#00a953' IconColor, '一类' Label ,convert(varchar(64), NEWID()) IsUnique 
                                                        union 
                                                        select 'qiaoliangguanli' ParentIcon,'#1a8fff' IconColor, '二类' Label ,convert(varchar(64), NEWID()) IsUnique 
                                                        union 
                                                        select 'qiaoliangguanli' ParentIcon,'#ffc001' IconColor, '三类' Label ,convert(varchar(64), NEWID()) IsUnique 
                                                        union 
                                                        select 'qiaoliangguanli' ParentIcon,'#fa9e47' IconColor, '四类' Label ,convert(varchar(64), NEWID()) IsUnique 
                                                        union 
                                                        select 'qiaoliangguanli' ParentIcon,'#f04033' IconColor, '五类' Label ,convert(varchar(64), NEWID()) IsUnique ");
    
                                //sql = string.Format(@" select convert(varchar(64), NEWID()) IsUnique,'桥梁'  AssetType,  A.Id AssetId, BridgeName Label,NULL Number,CenterLon Lon,CenterLat Lat, 'dingwei3'  LeafIcon, 'qiaoliangguanli' ParentIcon , B.Id LayerId ,'#F89017' IconColor ,
                                //        (case when a.BridgeLevel in ('四类','五类') then 1 else 0 end) as State, (case when a.BridgeLevel in ('四类','五类') then 'shexiangtou' else '' end) as LeafIcon1 from BMS_D_Bridge  A left join YC_S_MapLayer B
                                //                                on B.LayerName='桥梁'  left join BMS_S_AssetType C on C.TypeName='桥梁' {0}", Important == 0 ? "" : "where C.IsCommonType = 1");
                                break;
                            case "隧道":
                                sql = string.Format(@" select convert(varchar(64), NEWID()) IsUnique,'隧道'  AssetType, A.Id AssetId ,TunnelName Label,NULL Number,ULon Lon,ULat Lat, 'dingwei3'  LeafIcon, 'suidaoguanli' ParentIcon , B.Id LayerId ,'#00A854' IconColor  from BMS_D_Tunnel  A left join YC_S_MapLayer B
                                                                on B.LayerName='隧道'   left join BMS_S_AssetType C on C.TypeName='隧道' {0}", Important == 0 ? "" : "where C.IsCommonType = 1");
                                break;
                            case "涵洞":
                                sql = string.Format(@" select convert(varchar(64), NEWID()) IsUnique ,'涵洞'  AssetType,0 AssetId, '涵洞' Label,NULL Number,null  Lon,null  Lat, 'dingwei3'  LeafIcon, 'handongguanli' ParentIcon ,'#F89017' IconColor ");
                                break;
                            default:
                                sql = string.Format(@" select  convert(varchar(64), NEWID()) IsUnique ,B.TypeName  AssetType,  B.TypeName Label,'' LeafIcon, B.Icon ParentIcon, count(1) Number, D.Id LayerId , B.IconColor from  BMS_S_AssetMainType A join BMS_S_AssetType B on A.Id=B.MainTypeId join BMS_D_AssetData C on A.id=C.MainTypeId and B.Id=C.TypeId
    									               left join YC_S_MapLayer D ON B.TypeName=D.LayerName  where  C.deleteState=0 and  A.TypeName='{0}' {1} group by A.TypeName, B.Id ,B.TypeName,B.Icon,D.Id , B.IconColor", y.Label, Important == 0 ? "" : "and B.IsCommonType = 1");
                                break;
                        }
                        if (sql != string.Empty)
                        {
        
                            if (y.Label == "桥梁")
                            {
        
                                y.children = dao.FindList<ChildrenModel>(sql);
    
                                // 自定义排序
                                string[] BridgeLevelSort = new string[] {
         "一类", "二类", "三类", "四类", "五类" };
                                y.children = y.children.OrderBy(e =>
                                {
        
                                    var index = Array.IndexOf(BridgeLevelSort, e.Label);
                                    if (index != -1) return index;
                                    else return int.MaxValue;
                                }).ToList();
                            }
                            else
                            {
        
                              y.children = dao.FindList<ChildrenModel>(sql);
                            }
    
                        }
                        // y.children = y.children.Where(yy => yy.Number > 0).ToList();
    
                        sql = string.Empty;
    
                        y.children.ForEach(o =>
                        {
        
    
                            sql = string.Format(@" select convert(varchar(64), NEWID()) IsUnique,'桥梁'  AssetType,  A.Id AssetId, BridgeName Label,NULL Number,CenterLon Lon,CenterLat Lat, 'dingwei3'  LeafIcon, 'qiaoliangguanli' ParentIcon , B.Id LayerId ,'{2}' IconColor ,
                                            (case when  d.CameraSerial is not null then 1 else 0 end) as State, (case when d.CameraSerial is not null then 'shexiangtou' else '' end) as LeafIcon1,(case when d.CameraSerial is not null then 'shexiangtou' else '' end) as strToken from BMS_D_Bridge  A left join YC_S_MapLayer B
                                                                    on B.LayerName='桥梁'  left join BMS_S_AssetType C on C.TypeName='桥梁' left join BMS_D_AssetCameraInfo d on a.Id=d.AssetId where a.BridgeLevel='{0}' {1}", o.Label, Important == 0 ? "" : "and C.IsCommonType = 1", o.IconColor);
    
                            if (sql != string.Empty)
                            {
        
                                o.children = dao.FindList<ChildrenModel>(sql);
    
                            }
    
                            o.children.ForEach(z =>
                            {
        
    
                                sql = string.Format(@" select  A.Id AssetId, CenterLon Lon,CenterLat Lat,(case when d.CameraSerial is not null then 1 else 0 end) as State,(case when d.CameraSerial is not null then 'shexiangtou' else '' end) as LeafIcon1,(case when d.CameraSerial is not null then 'shexiangtou' else '' end) as strToken from BMS_D_Bridge A left join BMS_S_AssetType C on C.TypeName = '桥梁' left join BMS_D_AssetCameraInfo d on a.Id=d.AssetId {1} where A.Id={0} 
                                        ", z.AssetId, Important == 0 ? "" : "where C.IsCommonType = 1");
                                if (sql != string.Empty)
                                {
        
                                    z.Palce = dao.FindList<PlaceModel>(sql);
                                    z.Palce = z.Palce.Where(zz => zz.Lat.ToString().IndexOf(".") >= 0).ToList();
                                }
                            });
                        });

#### 100. dao.Table.Any(Lambda) ####

dao.Table.Any(x => x.SourceId == entity.SourceId && x.SourceData == entity.SourceData)

[713859fbe33d4598967d5db8bc4b6143.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/04/06/624ce01c5ed44c5897abd7bae6836237.png
[https_blog.csdn.net_zz743830597_article_details_104637050]: https://blog.csdn.net/zz743830597/article/details/104637050
[Link 1]: http://t.zoukankan.com/c-x-a-p-6179323.html
[skip]: https://www.cnblogs.com/funiyi816/p/14958904.html
[https_www.cnblogs.com_archor_archive_2011_10_26_3199375.html]: https://www.cnblogs.com/archor/archive/2011/10/26/3199375.html